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10 bestEngine Treatment For High Mileageof December 2025

112M consumers helped this year.

30% off

1

STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK
STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

STP

9.8

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14% off

2

Wynn's W12264 Extreme Diesel System Fuel Injector Cleaner Engine Additive Treatment 325ml
Wynn's W12264 Extreme Diesel System Fuel Injector Cleaner Engine Additive Treatment 325ml

Wynn's

9.6

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29% off

3

STP Ultra 5 in 1 Petrol System Cleaner 400ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK
STP Ultra 5 in 1 Petrol System Cleaner 400ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

STP

9.3

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18% off

4

Wynn's Professional Formula Extreme Diesel Injector Cleaner Fuel System Additive 500ml
Wynn's Professional Formula Extreme Diesel Injector Cleaner Fuel System Additive 500ml

Wynn's

9.0

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34% off

5

Wynns 1831039 76401 500ml Formula Gold Diesel
Wynns 1831039 76401 500ml Formula Gold Diesel

Wynn's

8.7

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Wynn's Formula Gold High Performance Diesel System Treatment 500ml

Wynn's Formula Gold High Performance Diesel System Treatment 500ml

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STP Diesel High Milage Injector Cleaner 200 ml, Cleans and Protects your Engine for 300 miles, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

STP Diesel High Milage Injector Cleaner 200 ml, Cleans and Protects your Engine for 300 miles, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

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Slick-50 61399750 Engine Treatment 750ml

Slick-50 61399750 Engine Treatment 750ml

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Wynn's Formula Gold Engine Oil Treatment Increase Compression And Reduces Wear Petrol & Diesel

Wynn's Formula Gold Engine Oil Treatment Increase Compression And Reduces Wear Petrol & Diesel

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28% off

6

LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591
LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591

Liqui Moly

8.5

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10% off

7

Wynn's Engine Oil Stop Leak Sealer Treatment Additive For All Engine Types 325ml
Wynn's Engine Oil Stop Leak Sealer Treatment Additive For All Engine Types 325ml

Wynn's

8.2

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8

Liqui Moly 1803 Injection Cleaner 300ml
Liqui Moly 1803 Injection Cleaner 300ml

Liqui Moly

7.9

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16% off

9

Lucas Oil 40001 Heavy Duty Oil Stabilizer-1L
Lucas Oil 40001 Heavy Duty Oil Stabilizer-1L

Lucas Oil

7.6

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10

Wynn's Super Charge Oil Treatment Compression Restoring Additive For Petrol & Diesel Engines 425ml
Wynn's Super Charge Oil Treatment Compression Restoring Additive For Petrol & Diesel Engines 425ml

Wynn's

7.3

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